SWMS vs JSA: What's the Difference and Which Do You Need?
A SWMS is a legally mandated document required before any of the 18 high risk construction work activities listed in s.291 of the WHS Regulations, with content prescribed by s.299. A JSA is a general risk-assessment tool with no prescribed format, used for everyday task planning. A JSA cannot stand in for a SWMS where the law demands one.
Last updated 2026-07-02
The short answer
A Safe Work Method Statement (SWMS) is a legal requirement. If your job involves any of the 18 high risk construction work (HRCW) activities defined in s.291 of the model WHS Regulations, you must prepare a SWMS before work starts, and s.299 prescribes exactly what it has to contain.
A Job Safety Analysis (JSA) is a risk-assessment tool, not a prescribed legal document. No WHS regulation says what a JSA must contain or when you must use one. It exists because breaking a task into steps and thinking through the hazards is good practice for any job, high risk or not.
The two documents look similar on paper, which is why they get confused. The difference is legal status: one is mandatory with prescribed content, the other is voluntary and flexible.
What a SWMS is and when the law requires one
Under the model WHS Regulations, adopted in NSW, Queensland, SA, Tasmania, the ACT and the NT, a SWMS must be prepared before starting any high risk construction work. Section 291 lists 18 HRCW activities, lettered (a) through (r). They include work with a risk of a person falling more than 2 metres, demolition of load-bearing structures, disturbing asbestos, work in or near confined spaces, trenches deeper than 1.5 metres, work on or near energised electrical installations, tilt-up and precast concrete work, work near powered mobile plant, and work near roads or railways, among others.
Section 299 sets out what every SWMS must do: identify the work that is high risk construction work, specify the hazards and risks, describe the control measures, and describe how those controls will be implemented, monitored and reviewed. It must also account for site circumstances and be readily accessible and understandable to the workers who use it.
The obligations don't stop at writing the document. Under s.300 work must be carried out in accordance with the SWMS, and if it isn't, work must stop until the work complies or the SWMS is revised. Section 301 requires a copy to be given to the principal contractor before HRCW starts, s.302 requires review when things change, and s.303 requires the SWMS to be kept and available for inspection.
What a JSA is and where it fits
A JSA (sometimes called a JHA or job hazard analysis) breaks a task into steps, identifies the hazards at each step, and records the controls. It is the workhorse of everyday risk management: pre-start planning, routine maintenance, one-off tasks, and jobs that fall outside the 18 HRCW activities.
Because no regulation prescribes a JSA, you can shape it to the job. It can be a single page for a simple task. Many principal contractors and clients require JSAs as a condition of site access or under their WHS management system, so a JSA is often contractually required even though it isn't legislatively required.
A JSA still counts as evidence that you met your general duty to manage risks under the WHS Act, so it isn't just paperwork for the sake of it. It shows you identified hazards and applied controls before starting work.
SWMS vs JSA side by side
Here is how the two documents compare on the points that matter.
| Feature | SWMS | JSA |
|---|---|---|
| Legal status | Mandatory for the 18 HRCW activities under s.291 | Not prescribed by WHS legislation |
| Content requirements | Prescribed by s.299 of the WHS Regulations | No prescribed content or format |
| When it's used | Before any high risk construction work starts | Everyday task planning, pre-starts, non-HRCW work |
| Who must receive it | Principal contractor must get a copy before HRCW starts (s.301) | Whoever your site or client procedures require |
| Review obligations | Must be reviewed when work or controls change (s.302) | Good practice, not regulated |
| Record keeping | Must be kept and available for inspection (s.303) | As required by your own system or the client |
| Consequence of not having one | Breach of the WHS Regulations | Possible breach of site rules or contract, not the Regulations |
Which one do you need?
Ask one question first: does the job involve any of the 18 HRCW activities in s.291? If yes, you need a SWMS, full stop. A JSA does not satisfy the SWMS duty, no matter how thorough it is, because s.299 requires a document that specifically identifies the HRCW, addresses its hazards and controls, and meets the monitoring and review requirements. Handing an inspector a JSA for work at heights or trenching is a compliance gap.
If the job involves no HRCW activity, the Regulations do not require a SWMS, and a JSA is usually the right tool. Writing a full SWMS for a task like patch-painting an internal wall at ground level adds paperwork without adding a legal safeguard. That said, nothing stops you using a SWMS-style document for lower-risk work if a client asks for it.
In practice most trade businesses use both: a SWMS covering the high risk components of a project, and JSAs for the routine tasks around them. GSR sells editable Word versions of both, SWMS from $79.95 and JSA from $19.95, across 22 trades, each citing the relevant WHS provisions and AS/NZS standards.
- Job includes an s.291 HRCW activity: SWMS is legally required
- Job has no HRCW but real hazards: JSA is the practical choice
- Client or principal contractor demands a specific document: meet the contract as well as the law
- Unsure whether an activity is HRCW: check the 18 activities before work starts, not after
State differences worth knowing
Victoria and WA run their own versions of the SWMS duty. Victoria is not part of the harmonised WHS scheme: under the Occupational Health and Safety Regulations 2017 (Vic), the SWMS duty sits in Reg 327 and high risk construction work is defined in Reg 322, which lists 19 classes rather than 18. The duty holder is the employer and the regulator is WorkSafe Victoria. WA adopted its own harmonised laws in the WHS (General) Regulations 2022 (WA), where the SWMS duty is Reg 299 and HRCW is defined in Reg 291, enforced by WorkSafe WA.
South Australia historically used a 3 metre fall threshold for HRCW. That threshold changed to 2 metres on 1 July 2026, so SA now aligns with the national 2 metre threshold (check with SafeWork SA as with any state detail). So in every harmonised jurisdiction, work with a risk of a person falling more than 2 metres triggers the SWMS duty under s.291(a); in Victoria the falls class sits within Reg 322 of the OHS Regulations 2017 (Vic), so check the Victorian definition with WorkSafe Victoria.
The JSA position is the same everywhere: unlike a SWMS, a JSA has no equivalent of s.299 — WHS and OHS regulations do not set out a prescribed JSA format or content. Wherever you work, the question stays the same — is it high risk construction work under your state's definition? If it is, a JSA alone won't cut it.
Frequently asked questions
Is a JSA the same as a SWMS?
No. A SWMS is a legally mandated document required for the 18 high risk construction work activities listed in s.291 of the WHS Regulations, with content prescribed by s.299. A JSA is a general risk-assessment tool with no prescribed format or legal trigger. They both break work into hazards and controls, but only the SWMS carries specific legal obligations for preparation, compliance, review and record keeping.
Can I use a JSA instead of a SWMS?
Not for high risk construction work. If the job involves any s.291 HRCW activity, the WHS Regulations require a SWMS that meets the s.299 content requirements, and a JSA does not discharge that duty. For work that involves no HRCW activity, no SWMS is required and a JSA is an appropriate way to plan the task and manage its risks.
Do I need both a SWMS and a JSA on the same job?
Often, yes. A typical project mixes high risk and routine work. The SWMS must cover the HRCW activities, while JSAs handle everyday tasks and pre-start planning around them. Many principal contractors require JSAs under their site rules even where the Regulations don't, so carrying both keeps you covered legally and contractually.
Who has to prepare the SWMS, and what about the JSA?
Under the model WHS Regulations the PCBU carrying out the high risk construction work must ensure a SWMS is prepared before that work starts, and the principal contractor must be given a copy under s.301. In Victoria the duty sits with the employer under Reg 327 of the OHS Regulations 2017. JSAs have no legislated preparer; whoever plans the task, usually the supervisor or the workers doing it, completes one.
Does working above 2 metres always mean I need a SWMS instead of a JSA?
If there is a risk of a person falling more than 2 metres, that is high risk construction work under s.291(a) of the model WHS Regulations — the equivalent provisions are Reg 322 in Victoria and Reg 291 in WA — and a SWMS is required. The 2 metre threshold applies in every harmonised jurisdiction, and South Australia's former 3 metre threshold changed to 2 metres on 1 July 2026, so SA now aligns with the national 2 metre threshold. Work at heights below the threshold, with no other HRCW activity involved, can be managed with a JSA.
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Related guides
This guide is general information about work health and safety legislation, not legal advice. Requirements vary by state and by the specifics of your work — check with your regulator or a qualified professional before relying on it. Documents are templates and must be reviewed and adapted to your specific site conditions.